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Laboratory study of rotatory manipulation in the treatment of lumbar intervertebral disc protrusion

Ma Da Jiang Wei Zhuang  
Institute of Orthopaedics Traumatology,China Academy of Traditional Chinese Medicine(100700) The stress changes on posterior lateral edges of L4-5.L5-S1 discs and the positional alternates of articular processes of lumbar facet joints were measured while mimicing rotatory manipulations were performed on three spinal specimens from fresh cadavers.The study showed that rotatory manipulation with anterior and lateral flexion allowed a greater range of motion between articular processes of lumbar facet joints than straight rotatory manipulation.There was a sliding movement between articular processes while the spine was rotated.The interarticular space of the right facet joint was increased when the spine rotated to the left and vice versa.The sliding movement between the articular processes can adjust the position of lumbar vertebra.The pressure was increased at the left posterior lateral site of the disc and was decreased at the right posterior lateral site of the disc while the spinal specimen was rotaed during flexion to the left.and vice versa.Negative pressure would be changed to positive at the end stage of rotatory manipulation.Such kind of repeated changes of pressure will change the position and shape of the protruded nucleus,and modification of the pressure on the nerve root would be happened.
【CateGory Index】: R274.915.3
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